EP 1931517 A1 20080618 - INK JET BREAK-OFF LENGTH MEASUREMENT
Title (en)
INK JET BREAK-OFF LENGTH MEASUREMENT
Title (de)
TINTENSTRAHLABBRUCHLÄNGENMESSUNG
Title (fr)
DISPOSITIF DE MESURE DE LONGUEUR DE SÉPARATION DE JET D ENCRE
Publication
Application
Priority
- US 2006034913 W 20060908
- US 22945405 A 20050916
Abstract (en)
[origin: US2007064037A1] A jet break-off length measurement apparatus for a continuous liquid drop emission system is provided. The jet break-off length measurement apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle for emitting a continuous stream of liquid. Heater resistor apparatus is adapted to transfer pulses of thermal energy to the liquid in flow communication with the at least one nozzle sufficient to cause the break-off of the at least one continuous stream of liquid into a stream of drops of predetermined volumes. A sensing apparatus adapted to detect the stream of drops of predetermined volumes is provided. A control apparatus is adapted to determine a characteristic of the stream of drops of predetermined volumes that is related to the break-off length. Further apparatus is adapted to inductively charge at least one drop and to cause electric field deflection of charged drops. Jet stimulation apparatus comprising a plurality of transducers corresponding to the plurality of nozzles and adapted to transfer pulses of energy to the liquid sufficient to cause the break-off of the plurality of continuous streams of liquid into a plurality of streams of drops of predetermined volumes is also disclosed. Methods of measuring the jet break-off length using phase sensitive amplification circuitry are disclosed.
IPC 8 full level
B41J 2/02 (2006.01)
CPC (source: EP US)
B41J 2/03 (2013.01 - EP US); B41J 2002/022 (2013.01 - EP US); B41J 2002/033 (2013.01 - EP US); B41J 2202/13 (2013.01 - EP US); B41J 2202/16 (2013.01 - EP US)
Citation (search report)
See references of WO 2007035273A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
US 2007064037 A1 20070322; US 7434919 B2 20081014; DE 602006019288 D1 20110210; EP 1931517 A1 20080618; EP 1931517 B1 20101229; US 2009027459 A1 20090129; US 8226199 B2 20120724; WO 2007035273 A1 20070329
DOCDB simple family (application)
US 22945405 A 20050916; DE 602006019288 T 20060908; EP 06790197 A 20060908; US 2006034913 W 20060908; US 24332508 A 20081001